Data deficient

IUCN Red List category
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Data deficient is a conservation status. Scientists say a species is data deficient when there is not enough information to figure out how many of them there are and whether they are endangered. Very often, this means that it is unclear, where the species lives, or how often it can be found.

The megamouth shark is a data deficient species.
The short-nosed or deceptive chamaeleon (Calumma fallax) is a chameleon endemic to Madagascar. It was first described in 1900 in the Ikongo forest. It is data deficient. The size of the actual population is unknown.